Home / 13,172.47-18,178.02-7,204.70

Finding the Fourth Proportional to 13,172.47, 18,178.02 and 7,204.70

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Solution

The fourth proportional to 13,172.47, 18,178.02 and 7,204.70 is: 9,942.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.47 : 18,178.02 = 7,204.70 : x
  2. Step 2: Convert to fraction form
    13,172.47/18,178.02 = 7,204.70/x
  3. Step 3: Cross multiply
    13,172.47x = 18,178.02 × 7,204.70
  4. Step 4: Simplify right side
    13,172.47x = 130,967,123.89
  5. Step 5: Solve for x
    x = 130,967,123.89/13,172.47
  6. Step 6: Final answer
    x = 9,942.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.